In this activity, students investigate the fascinating and complex process of decomposition and lay the foundation for deeper understanding of concepts related to matter and energy transfer in ecosystems. Through exploration and discussion, students go beyond simple definitions. Instead, students discover key characteristics of decomposition as they struggle with creating a sequence for decomposing wood and leaves. They learn the difference between physical decomposition and chemical decomposition and that many things contribute to decomposition, but certain organisms are classified as decomposers. They also search for and discuss evidence of decomposers, make model diagrams to further develop their ideas about the process of decomposition, and discuss decomposition and its role in the cycling of matter. Finally, students are challenged to recognize the evidence and impact of decomposition in the ecosystems they explore.

Students will:
- Explore, observe, and compare samples of decomposing materials and use reasoning to determine the level of decomposition among them
- Search for and classify decomposers (or evidence of them) as fungi, bacteria or invertebrates
- Investigate and discuss decomposition as the process of breaking down dead organisms and their waste materials into smaller and simpler forms of matter
- Create a model diagram for the process of decomposition
- Discuss the role decomposers play in making matter available to living plants

PreparedBC’s Master of Disaster learning resources teach students the importance of knowing the risks, having a kit and having a plan as well as personal, household and neighbourhood preparedness. It is taught through three core modules, each with suggested learning outcomes, suggested activities and supporting interactive resources. Modules can be used in sequence or individually. Once all three modules are complete, students are officially a "Master of Disaster" and can receive their very own certificate of completion! All modules are customizable to suit the needs of each individual classroom.
**If your classroom uses these resources, please provide feedback as outlined on the Master of Disaster website. Your students will be entered to win a draw for Master of Disaster prizes, including a starter emergency kit!**

Master of Disaster are PreparedBC's learning resources to support educators in teaching students about how to prepare for disasters in their region. Resources align with all competencies as outlined in BC's new curriculum including: Communication, Thinking, Personal Awareness and Responsibility, Social Responsibility and Creative Thinking.